Truck drivers who fill up in Minnesota now have no choice but to use at least 2 percent of the renewable fuel. Minnesota, which has aggressively supported its farmers by mandating the blending of ethanol, is now the first state to require mixing biodiesel into all diesel fuel.

One of the few bright spots of the pork-laden Energy Policy Act is the new tax credit for biodiesel producers, which should grease the wheels for the domestically created fuel.